cc: Move gpu rasterization flag from LayerImpl to LayerTreeImpl.

cc/layers/picture_layer.cc

 // Copyright 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "cc/layers/picture_layer.h"
 
 #include "cc/layers/content_layer_client.h"
 #include "cc/layers/picture_layer_impl.h"
 #include "cc/trees/layer_tree_impl.h"
 #include "third_party/skia/include/core/SkPictureRecorder.h"
@@ skipping 35 matching lines @@
   } else if (update_source_frame_number_ ==
              layer_tree_host()->source_frame_number()) {
     // TODO(ernstm): This DCHECK is only valid as long as the pile's tiling_rect
     // is identical to the layer_rect.
     // If update called, then pile size must match bounds pushed to impl layer.
     DCHECK_EQ(layer_impl->bounds().ToString(),
               pile_->tiling_rect().size().ToString());
   }
 
   layer_impl->SetIsMask(is_mask_);
-  layer_impl->SetUseGpuRasterization(layer_tree_host()->UseGpuRasterization());
 
   // Unlike other properties, invalidation must always be set on layer_impl.
   // See PictureLayerImpl::PushPropertiesTo for more details.
   layer_impl->invalidation_.Clear();
   layer_impl->invalidation_.Swap(&pile_invalidation_);
   layer_impl->pile_ = PicturePileImpl::CreateFromOther(pile_.get());
 }
 
 void PictureLayer::SetLayerTreeHost(LayerTreeHost* host) {
   Layer::SetLayerTreeHost(host);
@@ skipping 114 matching lines @@
 
 bool PictureLayer::IsSuitableForGpuRasterization() const {
   return pile_->is_suitable_for_gpu_rasterization();
 }
 
 void PictureLayer::RunMicroBenchmark(MicroBenchmark* benchmark) {
   benchmark->RunOnLayer(this);
 }
 
 }  // namespace cc